Update dependencies (#468)
Update dependencies (#468)

* Fix docs-samples tests, round 1

* Fix circle.yml

* Add RUN_ALL_BUILDS flag

* More container builder bugfixes

* Tweak env vars + remove manual proxy install

* Env vars in bashrc don't evaluate dynamically, so avoid them

* Add semicolons for command ordering

* Add appengine/static-files test to circle.yaml

* Fix failing container builder tests

* Address comments

googleapis/nodejs-dns,googleapis/nodejs-dns